JP2012092569A - In-vehicle equipment control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve security while suppressing deterioration in responsiveness.SOLUTION: A portable machine 200 can transmit answer signals by switching among a plurality of frequencies. A switching pattern of the frequencies of the plurality of answer signals transmitted from the portable machine 200 is identified in a random manner. A request signal including information indicating the switching pattern of the frequencies of the answer signals is sent out. The reception determination of the answer signals (response signals ACK and ACK) transmitted from the portable machine 200 depending on the switching pattern of the frequencies based on the information included in the request signal is performed.

Description

  The present invention relates to an in-vehicle device control apparatus that performs collation of a portable device and controls an in-vehicle device according to the result of the collation.

  Conventionally, a remote control device that can unlock or lock a vehicle door without operating a key is known (for example, Patent Document 1). In the device of Patent Document 1, a request signal is sent to a portable device, and the portable device is collated by performing reception determination of a response signal transmitted from the portable device in response to the request signal, and the door lock state When it is determined that the key is a regular key, the door is unlocked.

JP 2000-104429 A

  In an in-vehicle control device that performs verification of a portable device by sending the above request signal to the portable device and performing reception determination of a response signal transmitted from the portable device in response to the request signal, It is assumed that collation of the portable device is established in a situation where the holder is located in the detection area of the vehicle side device.

  However, in the conventional vehicle-mounted control device, the transmission frequency of the response signal transmitted from the portable device in response to the request signal from the vehicle-side device is fixed. However, there is a problem that the collation of the portable device may be established even if it is not located in the detection area of the vehicle side device. If the collation of the portable device is established in this way, for example, a malicious third party can unlock the door of the vehicle, further start the vehicle engine, and steal the vehicle There is a problem of having sex.

  Therefore, in response to the transmission of the request signal, it is conceivable to prevent signal duplication by switching the plurality of frequencies from the portable device and transmitting the response signal.

  However, if the switching pattern of the frequency of the response signal transmitted from the portable device is fixed, the switching pattern is easily specified by a third party. When a switching pattern is specified by a third party, the signal can be copied while tuning the reception frequency according to the switching pattern, so that security is deteriorated.

  In addition, it is possible to improve security by increasing the number of response signals transmitted by switching the frequency from the portable device, but as the number of response signals increases, the time required for verification becomes longer. Therefore, there is a problem that the responsiveness is lowered.

  The present invention has been made in view of the above problems, and an object thereof is to improve security while suppressing a decrease in responsiveness.

  In order to achieve the above object, the invention according to claim 1 is a portable device which transmits a request signal to a portable device and performs reception determination of a response signal transmitted from the portable device in response to reception of the request signal. An in-vehicle device control apparatus that performs in-vehicle device control and controls in-vehicle devices in accordance with a result of the comparison, and includes a request signal transmission unit that transmits a request signal including random information. The response signal can be transmitted by switching a plurality of frequencies according to the information included in the information, and the frequency of the response signal transmitted from the portable device based on a part of the information included in the request signal Frequency specifying means for specifying a pattern, and reception of a response signal transmitted from a portable device according to a frequency switching pattern of the response signal specified by the frequency specifying means It is characterized by comprising: a reception determination means for performing a constant, a.

  According to such a configuration, the frequency switching pattern of the response signal transmitted from the portable device is specified based on some information included in the request signal, and transmitted from the portable device according to the frequency switching pattern of the response signal. Since the response signal reception determination is performed, it is difficult to identify the response signal frequency switching pattern without transmitting the response signal many times from the portable device, and the security is improved while suppressing a decrease in response. Can be achieved.

  The invention according to claim 2 further comprises trigger signal sending means for sending a trigger signal to the portable device after the request signal is sent by the request signal sending means, and the portable device receives 1 in response to receiving the request signal. Each time the trigger signal is received after transmitting the response signal for the second time, the response signal for the second and subsequent times is transmitted, and the reception determination means is sent from the portable device in response to the sending of the request signal. After the first response signal reception determination, the reception signal reception determination for the second and subsequent times transmitted from the portable device is performed every time a trigger signal is received.

  According to such a configuration, after performing the reception determination of the first response signal transmitted from the portable device in response to the transmission of the request signal, the second time transmitted from the portable device every time the trigger signal is received. Since the subsequent reception determination of the response signal is performed, the reception determination of the response signal can be performed with higher accuracy.

  In the invention according to claim 3, the frequency specifying means sets one of a frequency with a low frequency of matching and a frequency with a high frequency of non-matching as a low-priority frequency. It is characterized by specifying the frequency switching pattern of the response signal transmitted from the portable device excluding the low frequency.

  According to such a configuration, the frequency specifying means sets one of the frequency with a low number of times of matching and the frequency with a high number of times of non-matching as a low-priority frequency, and selects a frequency with a low priority. Since the switching pattern of the frequency of the response signal transmitted from the portable device without being specified is specified, it is possible to eliminate the influence of the interference wave or the like while suppressing the decrease in the responsiveness.

According to a fourth aspect of the present invention, the request signal sending means collates the portable device in accordance with an operation on the first operation unit for instructing one of locking and unlocking of the door of the vehicle. A request signal for checking the portable device in response to an operation on the second operation unit for instructing start of a power source for driving the vehicle. Is supposed to
The frequency specifying means responds to an operation on the second operation unit rather than the number of response signals transmitted from the portable device in response to a request signal for collating the portable device according to an operation on the first operation unit. The response signal frequency switching pattern is specified such that the number of response signals transmitted from the portable device in response to the request signal for collating the portable device increases.

  According to such a configuration, the portable device responds to the request signal for collating the portable device in response to an operation on the first operation unit for instructing one of locking and unlocking of the door of the vehicle. Carrying in response to a request signal for collating the portable device in response to an operation on the second operation unit for instructing the start of the power source for driving the vehicle rather than the number of response signals transmitted from the aircraft Since the frequency switching pattern of the response signal is specified so that the number of response signals transmitted from the machine is greater, even if a third party can unlock the vehicle door illegally, the vehicle It is difficult to illegally start the power source for traveling of the vehicle, and it is possible to prevent vehicle theft.

  Further, according to the fifth aspect of the present invention, it is possible to perform different number of verifications according to one operation depending on the type of verification, and the verification is performed a plurality of times according to one operation. In this case, the frequency specifying means fixes the frequency of the response signal transmitted from the portable device at the second and subsequent collations to one of the frequencies of the response signal transmitted from the portable device when the collation is first established. It is characterized by doing.

  According to such a configuration, when collating a plurality of times in response to a single operation, the frequency specifying means first matches the frequency of the response signal transmitted from the portable device at the second and subsequent collations. Since the frequency is fixed to any one of the frequencies of the response signal transmitted from the portable device, the responsiveness can be improved compared to the case where the response signal is transmitted a plurality of times from the portable device each time.

  Further, in the invention according to claim 6, the frequency specifying means sets the frequency of the response signal transmitted from the portable device for a certain period of time after the portable device collation is established. It is characterized in that it is fixed to any one of the frequencies used.

  According to such a configuration, the frequency specifying unit uses the frequency of the response signal transmitted from the portable device for a certain period of time after the verification of the portable device is established. Since it fixes to any one of these, responsiveness can be improved.

  According to a seventh aspect of the present invention, there is provided a first operating means for instructing the release of the security function of the vehicle, a second operating means for instructing the setting of the security function of the vehicle, And an operation estimation unit that estimates whether or not a safe operation has been performed on the vehicle by monitoring an operation on the operation unit and an operation on the second operation unit, and the frequency specifying unit is configured to When it is estimated that an operation has been performed, the frequency of the response signal transmitted from the portable device is fixed to a predetermined one.

  According to such a configuration, the vehicle is monitored by monitoring the operation on the first operation means for instructing the release of the security function of the vehicle and the operation on the second operation means for instructing the setting of the security function of the vehicle. It is estimated whether or not a safe operation has been performed, and if it is estimated that a safe operation has been performed on the vehicle, the frequency of the response signal transmitted from the portable device is fixed to a predetermined one. Responsiveness can be improved.

  As in the eighth aspect of the invention, the first operating means is at least one of door unlocking operation and engine starting operation, and the second operating means is door locking operation and engine stop operation. The operation estimation means is the operation before the second operation means after the operation with respect to the first operation means, the operation with respect to the operation means other than the first operation means, and the second operation means. Any one of the operations can be estimated as a safe operation.

  The invention according to claim 9 includes vehicle position specifying means for specifying the vehicle position, and position estimation means for estimating whether the vehicle position is a safe place based on the vehicle position, and the frequency The specifying means is characterized in that, when the position estimating means estimates that the vehicle position is a safe place, the frequency of the response signal transmitted from the portable device is fixed to a predetermined one.

  According to such a configuration, when the vehicle position is estimated to be a safe place, the frequency of the response signal transmitted from the portable device is fixed to a predetermined one. Can be improved.

  Note that, as in the invention described in claim 10, the operation estimation means includes a home parking lot where the location is registered, a parking lot located less than a predetermined distance from the building where the location is registered, and a dangerous location. It can be estimated that either of these is a safe place.

  According to the eleventh aspect of the present invention, the frequency specifying means determines that the frequency of the response signal transmitted from the portable device when it is determined that the same operation for instructing collation is performed within a predetermined time. It is characterized by releasing the fixation.

  According to such a configuration, the frequency specifying unit fixes the frequency of the response signal transmitted from the portable device when it is determined that the same operation for instructing the collation is performed within a predetermined time. Since it is canceled, responsiveness can be improved until it is determined that the same operation for instructing collation is performed within a certain period of time, and a decrease in responsiveness is suppressed after a certain period of time has elapsed. However, the security can be improved.

  Further, as in the invention described in claim 12, when the frequency specifying means determines that the same continuous operation for instructing collation is performed within a predetermined time, it is transmitted from the portable device. It is also possible to cancel the fixed frequency of the response signal.

  According to such a configuration, when it is determined that the same continuous operation for instructing the collation is performed within a predetermined time, the frequency specifying unit cancels the fixing of the frequency of the response signal. The response can be improved until it is determined that the same continuous operation for instructing collation is performed, and after a certain period of time, the deterioration of the response is suppressed and the security is reduced. It is possible to improve the performance.

  Further, as in the invention described in claim 13, when the frequency specifying means determines that the same operation for instructing collation has been performed a predetermined number of times or more, the response signal transmitted from the portable device is transmitted. The frequency can also be released.

  According to such a configuration, when it is determined that the same operation for instructing collation has been performed more than a predetermined number of times, the frequency specifying unit cancels the fixation of the frequency of the response signal, and thus instructes the collation. The response can be improved until it is determined that the same operation has been performed more than a certain number of times, and after performing more than a certain number of times, the security is improved while suppressing a decrease in response. Can do.

  Further, as in the invention described in claim 14, when it is determined that the same continuous operation for instructing collation has been performed a predetermined number of times or more, the frequency of the response signal transmitted from the portable device is fixed. Can also be canceled.

  According to such a configuration, when it is determined that the same continuous operation for instructing collation has been performed more than a predetermined number of times, the frequency specifying unit instructs the collation because the frequency of the response signal is released. The response can be improved until it is determined that the same continuous operation has been performed more than a certain number of times, and after performing more than a certain number of times, it is possible to improve the security while suppressing a decrease in the response. You can plan.

  In addition, as in the invention described in claim 15, the frequency specifying means transmits the frequency response from the portable device when it is determined that the same operation for instructing collation within a certain time has been performed a certain number of times. It is also possible to cancel the fixed frequency of the response signal.

  According to such a configuration, when it is determined that the same operation for instructing collation within a certain period of time has been performed more than a certain number of times, the frequency specifying unit releases the fixed frequency of the response signal. The response can be improved until it is determined that the same operation for instructing collation has been performed more than a certain number of times, and after a certain period of time, the decrease in response is suppressed and security It is possible to improve the performance.

  Further, as in the invention described in claim 16, when the frequency specifying means determines that the same continuous operation for instructing collation has been performed a predetermined number of times or more, a response transmitted from the portable device It is also possible to release the fixed frequency of the signal.

  According to such a configuration, when it is determined that the same continuous operation for instructing collation within a certain time is performed more than a certain number of times, the frequency specifying unit cancels the fixing of the frequency of the response signal. Responsiveness can be improved until it is determined that the same continuous operation for instructing collation within a certain period of time has been performed more than a certain number of times. However, the security can be improved.

  The invention according to claim 17 displays a selection screen for selecting a method for specifying a switching pattern of frequencies of a plurality of response signals transmitted from the portable device, and the frequency specifying means is selected by the user according to the selection screen. According to the method for specifying the response signal frequency switching pattern, a plurality of response signal frequency switching patterns transmitted from the portable device are specified.

  In this way, the selection screen for selecting the method for specifying the frequency switching pattern of the plurality of response signals transmitted from the portable device is displayed, and the frequency specifying means switches the frequency of the response signal selected by the user according to the selection screen. It is also possible to specify the frequency switching pattern of a plurality of response signals transmitted from the portable device according to the pattern specifying method.

It is a figure which shows schematic structure of the vehicle equipment control apparatus which concerns on 1st Embodiment of this invention. It is a figure for demonstrating the response signal (response signal and ACK) transmitted according to a request signal. It is a figure for demonstrating the response signal (response signal and ACK) transmitted according to a request signal. It is a flowchart of the locking process by the control part of the vehicle side unit in case the locking operation of the vehicle door is made. It is a flowchart of the engine starting process by the control part of the vehicle side unit in case the operation for starting the engine of a vehicle is made. It is a figure for demonstrating the response signal (response signal and ACK) transmitted according to a request signal. It is a flowchart of the engine starting process by the control part of the vehicle side unit in case the operation for starting the engine of a vehicle is made.

(First embodiment)
FIG. 1 shows a schematic configuration of the in-vehicle device control apparatus according to the first embodiment of the present invention. The in-vehicle device control apparatus is configured by a vehicle side unit 100 and a portable device 200. The in-vehicle device control device collates the portable device 200 by performing reception determination of a response signal transmitted from the portable device 200 in response to a request signal transmitted from the vehicle-side unit 100 mounted on the vehicle, Based on the collation result of the collation, in-vehicle devices such as the door control device 300 and the engine control device 40 are controlled.

  In addition, the portable device 200 in the present embodiment can transmit a plurality of response signals by switching a plurality of frequencies. In order to increase the confidentiality of the response signal transmitted from the portable device 200, the in-vehicle device control apparatus transmits a request signal including random information, and sets the frequency switching pattern of the plurality of response signals transmitted from the portable device 200. It is determined from a part of information of the request signal, and reception determination of a response signal transmitted from the portable device 200 is performed with a frequency switching pattern according to the information included in the request signal.

  The in-vehicle device control device performs verification for locking the door of the vehicle in response to a pressing operation (locking operation) of a door switch provided on the door handle by the user, and locks the vehicle door when the verification is established. . In addition, verification for unlocking the vehicle door is performed in response to an operation (unlocking operation) for gripping the door handle so as to touch a contact sensor provided on the back side of the door handle. To unlock.

  Further, collation for starting the engine of the vehicle is performed in response to a pressing operation of the engine start / stop switch (engine start operation) while the user depresses the brake pedal, and when the collation is established, the engine of the vehicle is started. Further, collation for stopping the engine of the vehicle is performed in response to a pressing operation (engine stop operation) of the engine start / stop switch in a state where the vehicle is stopped, and the engine of the vehicle is stopped when the collation is established.

  The vehicle side unit 100 includes a transmitter 110, a tuner 120, and a control unit 130.

  Transmitter 110 wirelessly transmits a request signal to a predetermined detection area outside the vehicle in accordance with data input from control unit 130. The transmitter 110 according to the present embodiment transmits a radio signal obtained by FM-modulating or AM-modulating a radio wave having a LF band (Low Frequency) radio wave (for example, a radio wave in the vicinity of 134 KHz) as a carrier wave.

  Further, the transmitter 110 has a vehicle interior antenna installed outside the vehicle interior and a vehicle interior antenna installed inside the vehicle interior.

  The vehicle-side unit 100 transmits a request signal from an antenna outside the vehicle interior to verify the portable device 200 that exists outside the vehicle interior, and carries the request signal from the vehicle interior antenna to carry the mobile device that exists inside the vehicle interior. It is possible to separately perform vehicle interior verification for performing verification of the machine 200.

  Tuner 120 receives a response signal wirelessly transmitted from portable device 200 in response to a request signal wirelessly transmitted from transmitter 110, and transmits data included in the response signal to control unit 230. The tuner 130 according to the present embodiment is configured to be able to receive a radio wave in the UHF band (Ultra High Frequency).

  The vehicle unit 100 according to the present embodiment is configured to receive the response signal by tuning the reception frequency when the tuner 130 receives the response signal sequentially transmitted from the portable device 200.

  The control unit 130 includes a CPU 131, a memory 132, and the like. The CPU 131 performs various processes according to programs stored in the memory 132.

  A door control device 300 and an engine control device 400 are connected to the control unit 130.

  The door control device 300 includes an actuator for controlling locking and unlocking of the vehicle door, a door switch provided on the door handle, a contact sensor provided on the back side of the door handle, and a control device (all not shown). I have.

  The door control device 300 sends a signal corresponding to a pressing operation on a door switch provided on the door handle and a signal corresponding to a contact operation on a contact sensor provided on the back side of the door handle to the vehicle unit 100, respectively. At the same time, when a vehicle door locking instruction is input from the vehicle side unit 100, the actuator is driven to control the locking of the vehicle door, and when a vehicle door unlocking instruction is input from the vehicle side unit 100, the actuator is driven. To control the unlocking of the vehicle door.

  The engine control device 400 includes an engine start / stop switch and a control device (both not shown) for instructing the engine start and engine stop of the vehicle, and signals the vehicle according to the operation of the engine start / stop switch by the driver. When the vehicle engine 100 is sent to the side unit 100 and a vehicle engine start instruction is input from the vehicle side unit 100, the vehicle engine is started. Further, when it is determined that the vehicle is stopped based on the vehicle speed signal and it is determined that the driver has operated the engine start / stop switch, the vehicle engine is stopped.

  On the other hand, the portable device 200 receives the request signal transmitted from the control unit 230, the vehicle-side unit 100, and sends the data included in the request signal to the control unit 230, and the control unit And a transmission unit 220 that wirelessly transmits a response signal including data input from 230.

  When transmitting the response signal, the transmission unit 220 transmits a radio signal obtained by FM-modulating or AM-modulating a radio wave having a specified frequency as a carrier wave from a plurality of specific frequencies. In this embodiment, a plurality of specific frequencies (for example, frequency f1, frequency f2,..., Frequency fn) can be selected by the transmission unit 220 from the 300 to 400 MHz band in the UHF band.

  The vehicle-side unit 100 according to the present embodiment transmits a request signal including random information, and specifies a frequency switching pattern of a plurality of response signals transmitted from the portable device 200 from a part of the information of the request signal. I have to. In addition, when the portable device 200 receives a request signal from the vehicle-side unit 100, the portable device 200 switches and transmits a response signal with a frequency switching pattern according to information included in the request signal.

  For example, as illustrated in FIG. 2A, when the frequency switching pattern specified based on the request signal is pattern 1, the portable device 200 transmits an ACK at the frequency f2 after sending a response signal at the frequency f1. ACK is then retransmitted at frequency f3.

  Also, as shown in FIG. 2B, when the frequency switching pattern specified based on the request signal is pattern 2, the portable device 200 transmits a response signal at the frequency f2, and then transmits an ACK signal at the frequency f3. Then, the ACK signal is retransmitted at the frequency f1.

  Also, as shown in FIG. 3A, when the frequency switching pattern specified based on the request signal is pattern 10, portable device 200 transmits an ACK at frequency f2 after sending a response signal at frequency f1. Send it out.

  Also, as shown in FIG. 3B, when the frequency switching pattern specified based on the request signal is the pattern 11, the portable device 200 sends an ACK at the frequency f1 after sending a response signal at the frequency f2. Send it out.

  As described above, the portable device 200 identifies the frequency switching pattern and the number of times based on the received request signal, and switches and transmits a plurality of response signals according to the identified frequency switching pattern.

  In the memory 132 of the control unit 130 in the vehicle-side unit 100, the ID code of the portable device 200 possessed by the user is registered in advance.

  When the vehicle-side unit 100 causes the tuner 130 to receive a plurality of response signals sequentially transmitted from the portable device 200, the vehicle-side unit 100 tunes the reception frequency and receives the response signal, and is further stored in the memory 132 of the control unit 130. The ID code and the ID code included in the response signal of the response signal are determined to match. The vehicle-side unit 100 collates the portable device 200 by performing the reception determination of the response signal in this way.

  FIG. 4 shows a flowchart of the locking process by the control unit 130 of the vehicle-side unit 100 when the vehicle door locking operation is performed. In addition, this vehicle equipment control apparatus implements vehicle interior collation and vehicle interior collation according to one locking operation. The control unit 130 periodically performs the process shown in FIG.

  First, it is determined whether or not there is an operation for locking the door of the vehicle (S100). Specifically, it is determined whether or not a pressing operation has been performed on a door switch provided on the door handle.

  Here, when there is no pressing operation with respect to the door switch provided in the door handle, determination of S100 becomes NO and it returns to determination of S100. If the user performs a pressing operation on the door switch provided on the door handle, the determination in S100 is YES, and then a request signal including random information is transmitted from the outdoor antenna (S102). A plurality of bits (for example, 3 bits) are assigned to the request signal as information indicating the frequency switching pattern of the response signal. Here, the response signal frequency switching pattern is specified at random by associating a part of the request signal with a plurality of bits.

  For example, when 3 bits become 000, the pattern 1 shown in FIG. 2A is obtained, and when 3 bits become 001, the pattern 2 shown in FIG. 2B is obtained. When the 3 bits become 101, the pattern 10 shown in FIG. 3A is obtained, and when the 3 bits become 100, the pattern 11 shown in FIG. 3B is obtained.

  Next, a response signal reception determination is performed (S104). Specifically, a response signal frequency switching pattern transmitted from the portable device is specified based on some information included in the request signal, and transmitted from the portable device in accordance with the identified response signal frequency switching pattern. The response signal is received. That is, the response signal is received by matching the reception frequency to the frequency switching pattern of the response signal, and the ID code stored in the memory 132 of the control unit 130 and the ID code included in the response signal of the response signal are matched. To determine whether to receive the response signal.

  Next, based on the determination result of the response signal reception determination, it is determined whether or not the vehicle exterior verification is OK (S106).

  If the response signal reception determination is normal, the determination in S106 is YES, and then the frequency of the frequency determined to be normal reception is stored in the memory 132 (S108), and the response signal transmitted from the portable device 200 is stored. The frequency is fixed to one of the frequencies normally received in the vehicle exterior verification in S102, a request signal is transmitted from the vehicle interior antenna (S112), and the process proceeds to S114.

  If the response signal reception determination is abnormal, the determination in S106 is NO, the number of frequencies determined to be abnormal reception is stored and stored in the memory 132 (S110), and a random request signal is transmitted from the vehicle interior antenna. (S113), the process proceeds to S114.

  In S114, a response signal reception determination is performed. Specifically, a response signal frequency switching pattern transmitted from the portable device is specified based on some information included in the request signal, and transmitted from the portable device in accordance with the identified response signal frequency switching pattern. The response signal is received. That is, the response signal is received by matching the reception frequency to the frequency switching pattern of the response signal, and the ID code stored in the memory 132 of the control unit 130 and the ID code included in the response signal of the response signal are matched. To determine whether to receive the response signal. In the pattern 1 shown in FIG. 2A, the response signals are received by adjusting the reception frequencies in the order of f1, f2, and f3. In the pattern 2 shown in FIG. 2B, the response signals of f2, f3, and f1 are received. The response signal is received in order by matching the reception frequency.

  Next, based on the determination result of the response signal reception determination, it is determined whether or not the vehicle interior verification is OK (normal) and the vehicle interior verification is NG (abnormal) (S116).

  If the vehicle interior verification in S106 is OK and the vehicle interior verification in S116 is NG, the determination in S116 is YES, and then locking control of the vehicle door is performed (S118). Specifically, the door control device 300 is instructed to lock the vehicle door, and the process ends. Thereby, the door of a vehicle is locked.

  In addition, if the vehicle interior verification in S106 is NG, or if the vehicle interior verification in S116 is OK even if the vehicle interior verification in S106 is OK, the determination in S106 is NO, and the vehicle door locking control is performed. This process is terminated without executing.

  FIG. 5 shows a flowchart of engine starting by the control unit 130 of the vehicle-side unit 100 when an operation for starting the engine of the vehicle is performed. The control unit 130 periodically performs the process shown in FIG.

  First, it is determined whether or not there is a start operation of the vehicle engine (S200). Specifically, it is determined whether or not the engine start / stop switch is pressed while the vehicle is stopped. The determination as to whether or not the vehicle is stopped can be made based on a signal input from the vehicle speed sensor.

  Here, if the engine start / stop switch is not pressed in a state where the vehicle is stopped, the determination in S200 is NO, and the determination returns to S200. If the engine start / stop switch is pressed while the vehicle is stopped, the determination in S200 is YES, and then a request signal including random information is sent from the vehicle interior antenna (S202). A plurality of bits (for example, 3 bits) are assigned to the request signal as information indicating the frequency switching pattern of the response signal. Here, similarly to S102 of FIG. 4, the response signal frequency switching pattern is randomly specified by associating a part of the request signal with a plurality of bits.

  Next, a response signal reception determination is performed (S204). Specifically, the response signal is received in accordance with the frequency switching pattern of the response signal, the ID signal stored in the memory 132 of the control unit 130, and the ID code included in the response signal of the response signal are received. And a response signal reception determination.

  Next, it is determined whether or not the vehicle interior verification is OK based on the determination result of the response signal reception determination (S206).

  A response signal is transmitted according to the frequency switching pattern according to the information included in the request signal from the portable device 200 in which the ID code is registered in advance, and the frequency switching pattern according to the information included in the request signal is transmitted by the tuner 120. If the ID signal stored in the memory 132 of the control unit 130 matches the ID code included in the response signal of the response signal and the reception determination of the response signal is normal, The determination is YES, and then engine start control is performed (S208). Specifically, the engine control device 400 is instructed to start the engine of the vehicle, whereby the engine of the vehicle is started.

  Next, the frequency of the frequency determined to be normal reception is accumulated and stored in the memory 132 (S210), and this process ends.

  If the response signal is not normally received by the tuner 120 according to the frequency switching pattern according to the information included in the request signal, the determination in S206 is NO and the number of frequencies determined to be abnormal reception is stored in the memory 132. (S212), and this process is terminated.

  In addition, for example, even if a malicious third party duplicates a request signal and attempts to transmit a response signal from the portable device 200 in response to the duplicated request signal, the frequency of the frequency specified by the portable device 200 is randomly determined. Response signals are sequentially transmitted according to the switching pattern, and the response signals cannot be duplicated. That is, the tuner 120 cannot normally receive the response signal, the determination in S206 is NO, and this process is terminated without starting the vehicle engine.

  According to the configuration described above, the portable device 200 can transmit a response signal by switching a plurality of frequencies, send a request signal including random information, and transmit a response signal from the portable device 200. The response signal frequency switching pattern is specified from a part of the request signal information, and the reception determination of the response signal transmitted from the portable device 200 is performed with the frequency switching pattern according to the information included in the request signal. Therefore, it is difficult to specify the frequency switching pattern of the response signal, and the security can be improved.

  In the present embodiment, the switching pattern of the frequency of the response signal is specified at random for the case where the locking operation of the vehicle door is performed and the case where the vehicle engine starting operation is performed, and the frequency of the response signal is determined. Although the request signal including the information indicating the switching pattern is transmitted and the reception determination of the response signal transmitted from the portable device 200 is performed in response to the request signal, the unlocking operation of the vehicle door is performed. In the case where the engine stop operation of the vehicle is performed, similarly, the frequency switching pattern of the response signal is specified at random, and a request signal including information indicating the frequency switching pattern of the response signal is transmitted. The reception determination of the response signal transmitted from the portable device 200 in response to the request signal can also be performed.

(Second embodiment)
In the first embodiment, the configuration in which the response signal and the ACK are sequentially transmitted from the portable device 200 in response to the request signal transmitted from the vehicle-side unit 100 has been described. 6, after transmitting the request signal, the trigger signal Trg is transmitted to the portable device 200, and the portable device 200 responds to the first response signal (response signal) in response to reception of the request signal. Is transmitted, the response signal (ACK) for the second and subsequent times is transmitted each time the trigger signal Trg is received.

  According to such a configuration, the vehicle-side unit 100 determines whether or not the first response signal (response signal) has been received in response to reception of the request signal, and then receives the trigger signal Trg for the second and subsequent times. Since the response signal (ACK) reception determination is performed, the response signal reception determination can be performed with high accuracy.

(Third embodiment)
In this embodiment, a frequency with a small number of times of matching is set as a low-priority frequency, and the frequency specifying unit specifies a frequency switching pattern of the response signal transmitted from the portable device excluding the low-priority frequency. To do.

  The vehicle-side unit 100 is configured to transmit information that instructs the portable device 200 to set a frequency with a small number of verifications to a frequency with a low priority. This transmission timing is performed in advance separately from transmission / reception of data for verification.

  In addition, when receiving this information, the portable device 200 sets a frequency with a small number of times of collation as a low priority frequency and sends out a response signal by excluding the low priority frequency.

  In S104 and S114 of FIG. 4, the control unit 130 of the vehicle side unit 100 transmits a frequency with a low number of times of verification as a low priority frequency, and excludes this low priority frequency and is transmitted from the portable device 200. The frequency pattern of the response signal is specified. As a result, the switching pattern of the frequency of the response signal transmitted from the portable device excluding frequencies that have not been received abnormally or normally due to the interference wave or the like is specified, so that the interference wave is suppressed while suppressing a decrease in responsiveness. It is possible to eliminate the influence of such as.

(Fourth embodiment)
In the present embodiment, a frequency with a high frequency of verification failure is set as a low-priority frequency, and the frequency specifying unit excludes the low-priority frequency and the frequency switching pattern of the response signal transmitted from the portable device Is identified.

  The vehicle-side unit 100 is configured to transmit information that instructs the portable device 200 to set a frequency with a small number of verifications to a frequency with a low priority. This transmission timing is performed in advance separately from transmission / reception of data for verification.

  In addition, when receiving this information, the portable device 200 transmits a response signal by setting a frequency with a high number of times of collation failure as a low priority frequency and excluding the low priority frequency. Yes.

  In S104 and S114 of FIG. 4, the control unit 130 of the vehicle side unit 100 transmits a frequency with a low number of times of verification as a low priority frequency, and excludes this low priority frequency and is transmitted from the portable device 200. The frequency pattern of the response signal is specified. As a result, the switching pattern of the frequency of the response signal transmitted from the portable device excluding frequencies that have not been received abnormally or normally due to the interference wave or the like is specified, so that the interference wave is suppressed while suppressing a decrease in responsiveness. It is possible to eliminate the influence of such as.

(Fifth embodiment)
In the first embodiment, the number of response signals transmitted from the portable device 200 in response to the unlocking operation and the number of response signals transmitted from the portable device 200 in response to the engine start operation are the same number (three times). However, in the present embodiment, the number of response signals transmitted from the portable device 200 is changed according to the unlocking operation in accordance with the type of operation in consideration of the magnitude of damage when the verification is illegally established. To do.

  In the present embodiment, for example, the vehicle-side unit 100 sets the number of response signals transmitted from the portable device 200 in response to the door unlocking operation or the door locking operation to two, and the portable device in accordance with the engine start operation. The frequency of response signals transmitted from 200 is set to three, and the frequency switching pattern of the response signals is specified.

  According to such a configuration, the response signal transmitted from the portable device 200 in response to the engine start operation rather than the number of response signals transmitted from the portable device 200 in response to the door unlocking operation or the door locking operation. Therefore, even if a third party can unlock the vehicle door illegally, it is difficult to start the engine illegally, and vehicle theft can be prevented. That is, it is possible to reduce theft damage when the verification is made illegally.

(Sixth embodiment)
In the present embodiment, verification is performed by randomly specifying a response signal switching pattern and performing a reception determination of a response signal transmitted from the portable device 200. For the verification of the portable device 200, the frequency of the response signal transmitted from the portable device 200 is fixed to one of the frequencies of the response signal transmitted from the portable device 200 when the verification is first established.

  The vehicle-side unit 100 performs verification by randomly specifying a response signal switching pattern and performing reception determination of a response signal transmitted from the portable device 200. If this verification is established, the verification is established. After that, for a certain period of time, the frequency of the response signal transmitted from the portable device 200 is fixed to any one of the frequencies used in the matching of the portable device 200 for which the matching has been established. The portable device 200 is instructed as follows.

  In response to this instruction, the portable device 200 uses the frequency of the response signal transmitted from the portable device 200 for collation of the subsequent portable device 200 for collation of the portable device 200 for which collation has been established. It is designed to be fixed at any one of the frequencies.

  When the control unit 130 of the vehicle-side unit 100 randomly identifies the response signal switching pattern and performs reception determination of the response signal transmitted from the portable device 200, and when this verification is established, After this verification is established, for a certain period of time, the frequency of the response signal transmitted from the portable device 200 for the subsequent verification of the portable device 200 is the response signal transmitted from the portable device 200 when the verification is first established. A response signal is received at a fixed frequency. Thereby, responsiveness can be improved more.

(Seventh embodiment)
In the first embodiment, when the verification for starting the engine of the vehicle is performed according to the engine start operation, the frequency switching pattern of the response signal is specified at random, and the frequency switching pattern of the response signal is shown. The response signal transmitted from the portable device 200 is received in response to the request signal including the received information. However, when the verification for stopping the engine of the vehicle is performed according to the engine stop operation, theft damage There is no worry. Similarly, there is no fear of theft damage when collating for locking the door of the vehicle according to the locking operation of the door of the vehicle.

  Therefore, in the present embodiment, an operation (unlocking operation or engine start operation) for instructing to release the security function of the vehicle and an operation (locking operation or engine stop operation) for instructing the setting of the security function of the vehicle are performed. Monitor to estimate whether a safe operation has been performed on the vehicle.

  When it is estimated that a safe operation has been performed on the vehicle, the vehicle unit 100 instructs the portable device 200 to fix the frequency of the response signal to a predetermined one.

  In addition, when the portable device 200 receives an instruction from the vehicle-side unit 100, the frequency of the response signal is fixed to a predetermined one.

  When it is estimated that a safe operation has been performed on the vehicle, the control unit 130 of the vehicle-side unit 100 receives the response signal by fixing the frequency of the response signal to a predetermined one. Thereby, responsiveness can be improved more.

(Eighth embodiment)
The in-vehicle device control device according to the present embodiment includes a navigation interface for exchanging data with a navigation device (not shown), and acquires information for specifying the vehicle position from the navigation device via the navigation interface. It is possible to do.

  FIG. 7 shows a flowchart of the engine start process by the control unit 130 of the vehicle side unit 100 when the engine start operation of the vehicle is performed. The control unit 130 periodically performs the process shown in FIG.

  First, it is determined whether or not there is an operation for starting the engine of the vehicle (S300). Here, when there is no start operation of the engine of the vehicle, the determination in S300 is NO, and the determination in S300 is repeated.

  Further, when the vehicle engine start operation is performed, the determination in S300 is YES, and then information for specifying the vehicle position is obtained from the navigation device via the navigation interface, and the vehicle position is specified. The vehicle position is specified based on the information for the purpose (S302).

  Next, it is determined whether or not the vehicle position is a safe place (S304). In the present embodiment, the vehicle is designated as a safe place except for an area less than a predetermined distance from the registered home parking lot, an area less than a predetermined distance from the registered building, and a dangerous place. Determine if the location is a safe place.

  Here, for example, when the vehicle position is located in an area less than a predetermined distance from the home parking lot, the determination in S302 is YES, and then the frequency of the response signal is fixed to the predetermined frequency. A request signal is transmitted from the indoor antenna (S306).

  In addition, when the vehicle position is not located in either the area less than the predetermined distance from the home parking lot or the area less than the predetermined distance from the registered building, the determination in S302 is NO, and then A request signal including random information is transmitted from the vehicle interior antenna (S308).

  Here, a response signal is transmitted from the portable device 200 in response to the request signal transmitted in S306 and S308.

  Next, a response signal reception determination is performed (S310). Specifically, the response signal sequentially transmitted from the portable device 200 is received by matching the reception frequency with the frequency switching pattern of the response signal designated by the request signal transmitted in S306 and S308. The ID code stored in the memory 132 is matched with the ID code included in the response signal of the response signal, and the reception determination of the response signal is performed. In S306, when the frequency of the response signal is fixed to a predetermined frequency, the response signal is received at the fixed frequency.

  Next, it is determined whether or not the collation is OK based on the determination result of the response signal reception determination (S312).

  Here, when collation is OK based on the determination result of the response signal reception determination, the determination in S312 is YES, and then engine start control is performed (S314). Specifically, the engine control device 400 is instructed to start the engine of the vehicle, whereby the engine of the vehicle is started.

  Further, when the collation is NG based on the determination result of the response signal reception determination, the determination in S314 is NO, and this process is terminated without performing the engine start control.

  As described above, it is estimated whether or not the vehicle position is a safe place, and when it is estimated that the vehicle position is not a safe place, the frequency switching pattern of a plurality of response signals transmitted from the portable device When the vehicle position is estimated to be a safe place, the frequency of the response signal transmitted from the portable device can be fixed to a predetermined one.

(Ninth embodiment)
In the sixth to eighth embodiments, the frequency of the response signal is fixed. However, in the present embodiment, the same operation (locking operation, unlocking) for instructing collation of the portable device 200 within a certain time is shown. If it is determined that any one of the lock operation, the engine start operation, and the engine stop operation) is performed, the response signal frequency is released.

  It is determined that the vehicle-side unit 100 has performed the same operation (any one of the locking operation, the unlocking operation, the engine starting operation, and the engine stopping operation) for instructing collation of the portable device 200 within a certain time. In such a case, the portable device 200 is instructed to release the fixed frequency of the response signal.

  In addition, when the portable device 200 receives an instruction from the vehicle-side unit 100, the portable device 200 releases the frequency of the response signal.

  The control unit 130 of the vehicle-side unit 100 performs the same operation (any one of the locking operation, the unlocking operation, the engine starting operation, and the engine stopping operation) for instructing the collation of the portable device 200 within a certain time. If it is determined that the response signal has been received, the response signal is received with the frequency of the response signal fixed to a predetermined one. Thereby, responsiveness can be improved.

  In the present embodiment, when it is determined that the same operation for instructing the collation of the portable device 200 is performed within a certain time, the frequency of the response signal is released from being fixed. When it is determined that the same continuous operation for instructing 200 collations is performed, the frequency of the response signal may be fixed.

(10th Embodiment)
In the present embodiment, when it is determined that the same operation for instructing collation has been performed a predetermined number of times or more, the control unit 130 of the vehicle-side unit 100 releases the fixed response signal frequency to the portable device 200. You are instructed to do so.

  In addition, when the portable device 200 receives an instruction from the vehicle-side unit 100, the portable device 200 releases the frequency of the response signal.

  When the control unit 130 of the vehicle-side unit 100 determines that the same operation for instructing the collation of the portable device 200 has been performed a predetermined number of times or more, the control unit 130 fixes the frequency of the response signal transmitted from the portable device. Release the response signal. Thereby, responsiveness can be improved.

  In this embodiment, when it is determined that the same operation for instructing collation has been performed a certain number of times or more, the frequency of the response signal is released, but the same continuous operation for instructing collation is constant. If it is determined that the response has been performed more than once, the frequency of the response signal may be fixed.

(Eleventh embodiment)
In the present embodiment, when the control unit 130 of the vehicle-side unit 100 determines that the same operation for instructing collation of the portable device 200 has been performed more than a certain number of times within a certain time, Instructing to release the fixed frequency of the response signal.

  In addition, when the portable device 200 receives an instruction from the vehicle-side unit 100, the portable device 200 releases the frequency of the response signal.

  When the control unit 130 of the vehicle-side unit 100 determines that the same operation for instructing collation of the portable device 200 has been performed more than a certain number of times within a certain time, the frequency of the response signal transmitted from the portable device 200 The response signal is received. Thereby, responsiveness can be improved.

  In this embodiment, when it is determined that the same operation for instructing collation of the portable device 200 has been performed more than a certain number of times within a certain period of time, the frequency of the response signal is released. If it is determined that the same continuous operation for instructing the collation of the portable device 200 has been performed a predetermined number of times or more, the frequency of the response signal may be fixed.

(Twelfth embodiment)
In the present embodiment, a selection screen for selecting a method for specifying the frequency switching pattern of a plurality of response signals transmitted from the portable device 200 is displayed, and the frequency switching pattern of the response signal selected by the user according to the selection screen is displayed. A frequency switching pattern of a plurality of response signals transmitted from the portable device is specified according to the specifying method.

  In this manner, the selection screen for selecting the method for specifying the frequency switching pattern of the plurality of response signals transmitted from the portable device is displayed, and the method for specifying the frequency switching pattern of the response signal selected by the user according to the selection screen is displayed. It is also possible to specify a frequency switching pattern of a plurality of response signals transmitted from the portable device.

(13th Embodiment)
In the first embodiment, the switching pattern of the response signal frequency is determined from a predetermined specific bit (for example, 3 bits) of the request signal. In this embodiment, the frame of the request signal is divided into a plurality of blocks. Then, the switching pattern of the frequency of the response signal is determined at the frequency specified by the data value of each block.

  For example, if the frame length is 32 bits, it is divided into four 8-bit blocks, the frequency corresponding to the value of the first block, the frequency corresponding to the value of the second block, and the value of the third block The switching pattern of the frequency of the response signal is determined so that the frequency corresponding to the frequency to be processed and the frequency corresponding to the value of the fourth block are in order. For example, the value of the first block is 3h (hereinafter, h represents a hexadecimal number), the value of the second block is 2h, the value of the third block is Fh, and the value of the fourth block is Dh. If the block value is 3, f1; if the block value is 2, f2; if the block value is F; f3; if the block value is D, f2; The frequency switching pattern is in the order of f1, f2, f3, and f2.

  In this way, by dividing the frame of the request signal into a plurality of blocks and determining the switching pattern of the frequency of the response signal at the frequency specified by the value (data) of each block, the frequency of the response signal is determined. It is not necessary to assign a bit for specifying the switching pattern to the request signal.

(14th Embodiment)
In the first embodiment, the switching pattern of the frequency of the response signal is determined from a predetermined specific bit (for example, 3 bits) of the request signal. In the present embodiment, the data value in the frame of the request signal is changed. A response signal frequency switching pattern is determined using a function as a variable.

  For example, when the frame length is 32 bits, the block is divided into four 8-bit blocks, the value of the first block is 4h, the value of the second block is Ah, the value of the third block is 6h, When the value of the block is 3, the switching pattern of the response signal frequency is determined using the function f (x) having 4A63 as a variable. For example, when fx (4A63) = 001, the response signal frequency switching pattern is set to f1, f3, and f3 corresponding to 001.

  In this way, the bit for specifying the response signal frequency switching pattern is determined by determining the response signal frequency switching pattern using a function whose value is the data value in the request signal frame. No need to assign to

(Fifteenth embodiment)
In the first embodiment, the switching pattern of the response signal frequency is determined from a predetermined specific bit (for example, 3 bits) of the request signal. In this embodiment, the frame of the request signal is divided into a plurality of blocks. Then, the frequency switching pattern of the response signal is determined at the frequency specified by the data value of the specific bit of each block.

  For example, when the frame length is 32 bits, it is divided into four 8-bit blocks, the frequency corresponding to the data value of the lower 3 bits in the first block, and the data of the lower 2 bits in the second block The frequency of the response signal in order of the frequency corresponding to the value, the frequency corresponding to the data value of the lower 15 bits in the third block, and the frequency corresponding to the data value of the lower 13 bits in the fourth block The switching pattern is determined.

  In this way, the frequency of the response signal is determined by dividing the frame of the request signal into a plurality of blocks and determining the switching pattern of the frequency of the response signal at the frequency specified by the data value of the specific bit of each block. There is no need to assign a bit for specifying the switching pattern to the request signal.

(Other embodiments)
In the above embodiment, the portable device 200 is collated according to the locking operation of the vehicle door, the unlocking operation of the vehicle door, the starting operation of the vehicle engine, and the stopping operation of the vehicle engine. The portable device 200 can be verified in accordance with the operation.

  Moreover, in the said embodiment, although collation of the portable device 200 was implemented according to the engine operation and engine stop operation of the vehicle which mounted the engine as a motive power source for driving | running | working, it is not limited to such an engine stop operation. For example, depending on the start / stop operation of the engine and motor in a hybrid vehicle that travels using the engine and motor as a power source for travel, and the start / stop operation of the motor in an electric vehicle that travels using the motor as a power source for travel Verification of the portable device 200 can also be performed.

  The correspondence relationship between the configuration of the above embodiment and the configuration of the claims will be described. S102, S112, S202, S306, and S308 correspond to request signal transmission means, and S104, S114, S204, and S310 specify the frequency. In FIG. 6, the step of sending the trigger signal Trg to the portable device 200 after sending the request signal corresponds to the trigger signal sending means, and S108, S110, S210, and S212 are storage means. The door switch provided on the door handle and the contact sensor provided on the back side of the door handle correspond to the first operation unit, the engine start / stop switch corresponds to the second operation unit, and S302 represents the vehicle. This corresponds to the position specifying means, and S304 corresponds to the estimating means.

DESCRIPTION OF SYMBOLS 100 Vehicle side unit 110 Transmitter 120 Tuner 130 Control part 131 CPU
132 memory 200 portable device 210 receiving unit 220 transmitting unit 230 control unit 300 door control device 400 engine control device

Claims (17)

A request signal is transmitted to the portable device, and the portable device is verified by performing reception determination of a response signal transmitted from the portable device in response to reception of the request signal, and the vehicle is mounted according to the result of the verification An in-vehicle device control device that controls devices,
A request signal sending means for sending a request signal containing random information;
The portable device can send the response signal by switching a plurality of frequencies according to information included in the request signal,
Frequency specifying means for specifying a frequency switching pattern of the response signal transmitted from the portable device based on a part of information included in the request signal;
An in-vehicle device control device comprising: a reception determination unit that performs reception determination of the response signal transmitted from the portable device in accordance with a frequency switching pattern of the response signal specified by the frequency specifying unit. Trigger signal sending means for sending a trigger signal to the portable device after sending the request signal by the request signal sending means;
The portable device is configured to transmit the response signal for the second and subsequent times each time the trigger signal is received after transmitting the response signal for the first time in response to the reception of the request signal,
The reception determination unit transmits the response signal from the portable device every time the trigger signal is received after performing the reception determination of the first response signal transmitted from the portable device in response to the transmission of the request signal. The in-vehicle device control apparatus according to claim 1, wherein reception determination of the response signal after the second time is performed.   The frequency specifying means sets one of a frequency with a small number of times that the verification has been established and a frequency with a large number of times that the verification has not been established as a low-priority frequency, and excludes the low-priority frequency from the mobile phone The in-vehicle device control device according to claim 1 or 2, wherein a switching pattern of a frequency of the response signal transmitted from a machine is specified. The request signal sending means sends the request signal for checking the portable device in response to an operation on a first operation unit for instructing one of locking and unlocking of the door of the vehicle. And sending the request signal for checking the portable device to the portable device in response to an operation on the second operation unit for instructing the start of the power source for traveling of the vehicle. And
The frequency specifying means is configured to determine whether the second response signal is transmitted from the portable device in response to the request signal for checking the portable device according to an operation on the first operation unit. Frequency response switching pattern of the response signal so that the number of response signals transmitted from the portable device in response to the request signal for collating the portable device in response to an operation on the operation unit The vehicle-mounted device control device according to any one of claims 1 to 3, characterized by:   Depending on the type of collation, it is possible to perform different number of collations according to one operation, and when performing plural collations according to the one operation, the frequency specifying means includes 2 The frequency of the response signal transmitted from the portable device at the time of the subsequent verification is fixed to any one of the frequencies of the response signal transmitted from the portable device when the verification is first established. The in-vehicle device control device according to any one of claims 1 to 4.   The frequency specifying means may use a frequency of the response signal transmitted from the portable device for a certain period of time after the verification of the portable device is established, as one of the frequencies used when the verification of the portable device is established. The in-vehicle device control device according to claim 1, wherein the on-vehicle device control device is fixed to one. First operating means for instructing to release the security function of the vehicle;
Second operating means for instructing setting of a security function of the vehicle;
An operation estimating unit that monitors an operation on the first operation unit and an operation on the second operation unit and estimates whether or not a safe operation has been performed on the vehicle, and
The frequency specifying unit fixes the frequency of the response signal transmitted from the portable device to a predetermined one when the operation estimating unit estimates that a safe operation has been performed on the vehicle. The in-vehicle device control device according to claim 1, wherein: The first operation means is at least one of door unlocking operation and engine starting operation,
The second operation means is at least one of a door locking operation and an engine stop operation,
The operation estimation means includes an operation for the operation means other than the first operation means, an operation for the operation means other than the first operation means, and an operation for the second operation means after the operation for the first operation means. The vehicle-mounted device control device according to claim 7, wherein one of the two is estimated to be a safe operation. Vehicle position specifying means for specifying the vehicle position;
Position estimation means for estimating whether the vehicle position is a safe place based on the vehicle position, and
The frequency specifying means fixes the frequency of the response signal transmitted from the portable device to a predetermined one when the position estimating means estimates that the vehicle position is a safe place. The in-vehicle device control device according to any one of claims 1 to 4, wherein   The operation estimating means estimates that any one other than a home parking lot where the location is registered, a parking lot located less than a predetermined distance from the building where the location is registered, and a dangerous location is a safe location. The in-vehicle device control device according to claim 9.   The frequency specifying unit releases the fixed frequency of the response signal transmitted from the portable device when it is determined that the same operation for instructing collation is performed within a predetermined time. The in-vehicle device control device according to any one of claims 5 to 10.   When it is determined that the same continuous operation for instructing collation is performed within a predetermined time, the frequency specifying unit releases the fixed frequency of the response signal transmitted from the portable device. The in-vehicle device control device according to any one of claims 5 to 10, wherein   The frequency specifying means, when it is determined that the same operation for instructing collation has been performed a predetermined number of times or more, cancels the fixing of the frequency of the response signal transmitted from the portable device. The in-vehicle device control device according to any one of claims 5 to 10.   The frequency specifying means, when determining that the same continuous operation for instructing collation has been performed a predetermined number of times or more, cancels the fixing of the frequency of the response signal transmitted from the portable device. The in-vehicle device control device according to any one of claims 5 to 10, characterized by the above.   When it is determined that the same operation for instructing collation is performed a predetermined number of times or more within a predetermined time, the frequency specifying unit releases the fixed frequency of the response signal transmitted from the portable device. The in-vehicle device control device according to any one of claims 5 to 10, wherein:   When it is determined that the same continuous operation for instructing collation within a certain period of time has been performed more than a certain number of times, the frequency specifying unit fixes the frequency of the response signal transmitted from the portable device. The in-vehicle device control device according to any one of claims 5 to 10, wherein the on-vehicle device control device is canceled. Displaying a selection screen for selecting a method for specifying a frequency switching pattern of the response signals transmitted from the portable device;
The frequency specifying means specifies a frequency switching pattern of a plurality of response signals transmitted from the portable device according to a method of specifying a frequency switching pattern of the response signal selected by a user according to the selection screen. The in-vehicle device control device according to any one of claims 1 to 11.

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